AC Generator system having stabilized sensitivity for sensing the presence or absence of a conductive object
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United States of America Patent
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Sep 22, 1981
Grant Date -
N/A
app pub date -
Nov 15, 1978
filing date -
Nov 15, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A conductive object detector having an eddy current killed oscillator, wherein the oscillator output is stabilized by means of a proportional plus integral controller. The controller proportional gain is set low and the integral time long, hence a conductive object near the oscillator will 'kill' it, whereas the controller will minimize the effect of temperature or aging on the oscillator output.
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